Section
23, act Mar. 4, 1913, ch. 149, 37 Stat. 915, provided for pay of director of Hygienic Laboratory which is now known as the National Institute of Health. See section
210 of this title.

Section
23a, act May 26, 1930, ch. 320, § 1,46 Stat. 379, provided that Hygienic Laboratory should be succeeded by the National Institute of Health and that all laws, authorizations, and appropriations of Hygienic Laboratory should become applicable to its successor.

Section
23d, act May 26, 1930, ch. 320, § 4,46 Stat. 380, provided for appointment and compensation of personnel of the National Institute of Health. See section
209 of this title.

Section
23e, act May 26, 1930, ch. 320, § 5,46 Stat. 380, provided that facilities of the National Institute of Health be available to States, counties, and municipalities. See section
241 of this title.

Section
23f, act May 26, 1930, ch. 320, § 6,46 Stat. 380, provided for rank, pay, and allowances of Director of the Institute. See sections
206,
207, and
210 of this title.